feat(completion): support no-space completions for short flags

[mazitovt]

Close #1629

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[mazitovt]

@marckhouzam pls review the PR

[Luap99]

Duplicate of #1727?

[marckhouzam]

Thanks for the contribution @mazitovt !

Duplicate of #1727?

As @Luap99 noticed we just got a similar contribution in #1727. I've started reviewing that one and we should be getting it merged soon. I'll still have a look at yours as it may give a different perspective.

[mazitovt]

@marckhouzam Thanks!

[marckhouzam]

@mazitovt I've had a look at this PR and it is a step in the right direction. It is very similar to #1727 which came in first, so I'll focus on #1727 for now.

One note for your info is that although the Go logic works with your PR, the actual shell completion does not work as expected because the different shell script need to be updated to support this usecase. Note that #1727 has the same problem, but we'll work at getting it resolved.

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[marckhouzam]

Reopening. I plan on reviewing this. The other PR was closed by the author.

[github-actions]

The Cobra project currently lacks enough contributors to adequately respond to all PRs. This bot triages issues and PRs according to the following rules:

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[marckhouzam]

The CLA is not signed @mazitovt